beattie



4 Sheets-8heet 1.

'W. BEATTIE. Machine for. Uniting Knit Fabrics.

Patented June 15,1880.

v 2 4 Sheets-Sheet 2. 'W. BEATTIH.

Machine for Uniting Knit Fabrics.

No. 228,802. Patented June 15,1880.

TIL

if. y 2 h M1. ltl

N. PETERS, 'PHOTO-LITHOGRAFMER, WASHINGTON. D cv 4 Sheets-Sheet 3.

W. BEATTIE. Machine for Uniting Knit Fabrics. No. 228,802. Patented J une15i1880.

wwwaw%f I H Y 7, I i

4 Sheets-Sheet 4. W. BEATTIE. Machine for Uniting Knit Fabrics.

No. 228,802. Patented June 15,1880.

IIII/jV/II/II 7 'IIIIAVAIFM v :7

UNITED STATES PATENT OFFICE.

WILLIAM BEATTIE, OF GOHOES, NEW YORK.

MACH INE F OR UNITING KNIT FABRICS.

SPECIFICATION forming part of Letters Patent No. 228,802, dated June 15, 1880.

Application filed January 7, 1880.

To all whom it may concern Be it known that I, WILLIAM BEATTIE, of Cohoes, in the county of Albany and State-of New York, have invented certain new and useful Improvements in Machines for Uniting Knit Fabrics; and I do hereby declare that the follow ing is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification,-in which- Figure 1 is a plan view of the machine; Fig. 2, a side elevation; Fig. 3, an end elevation; Fig. 4, a cross-section on line at 00 of Fig. 1; Fig. 5, a vertical longitudinal section through the needle-bar, its shaft, and spool'standard on the line y of Fig. 3; Fig. 6, a vertical longitudinal section through the looper-arm and its shaft, and Fig. 7 a cross-section on the line 20 of Fig. 3.

My invention relates to circular turning-off machines which have for their object the sewing together of the two selvage-edges of pieces of knitted or looped fabrics and it consists in the means hereinafter set forth and claimed for reciprocating, elevating, and lowering both the needle and looper arms.

In the accompanying drawings, the letter A indicates the stationary base of the machine, upon which there are formed two immovable boxes, B, and two immovable standards, 0. A shaft, D, extends from one immovable box to the other, and is journaled therein, and to this shaft there is keyed or otherwise fixedly secured a cam-wheel, E, a gear-wheel, F, which may be a cam-wheel or not, and an eccentric disk, G, the periphery of which is encircled by a loose collar, H, which has an interiorlythreaded socket projectin g therefrom. The periphery of the eccentric is preferably flanged, so as to securely hold the collar to its place. A box, I, of any suitable form, but in this instance consisting of two uprights, J J, connected together at their lower ends by a bar, K, is suspended between .the immovable standards O by means of centers to or their equivalent, so that the box may oscillate. Through the top of this box or the uprights thereof there is passed a shaft, L, the same extending outside of both the uprights; and on this shaft, between the uprights and at a point thereon opposite to the gear-wheel F, there is keyed, screwed, or otherwise secured a small gear-wheel or pinion, M, which maybe a camwheel or not. To one end of the same shaft, outside of upright J, there is connected a crank, N, a collar, 0, being between the uprights and crank. The crank is the means by which power is applied to the machine, but a drive-pulley may be substituted therefor. To the other end of this same shaft there is connected a combined eccentric and cam, O, the eccentric being indicated by the letter d, and provided with a circumferential way or channel, a, while the cam is indicated by the letter 9, it being on the other side of the eccentric, or between it and the upright J, and is provided on its side face with a swell, h, at one end of which there is a recess, "5, and at the other a decline, j, as shown in the drawings, the recess 43 being deeper and longer and not so abrupt or sharp as the decline 9, and the periphery of the cam slightly flattened along the said recess and still further flattened along the decline j. The formation of the eccentric and cam is such that the needle will be moved forward and backward and the looper raised and lowered and moved to and fro sidewise over and under the needle as it is passed through the fabric, so as thereby to take the thread from the needle and hold'it While the needle is withdrawn, and thereby form a loop.

The construction of the eccentric and cam shown and described is not new with me, it being well known and used in machines of the class to which mine relates, and a more detailed description thereof need not be given. The same is true of the needle-arm and the springs d and h and their mode of operation. It will be understood that the cam-wheel E and gear-wheel F and pinion M are so constructed and secured in position that the pinion M and its shaft will make two revolutions to one of the gear-wheel F and canrwheel E, and that the cam of the wheel E is such that as the needle is being withdrawn from the fabric after its first forward stroke the cam will bear against the movable box and tilt it backward, thereby elevating the overhanging arm 1? and needle-bar and its operating eccentric and cam, and holding said parts in that position until the needle has again been thrust forward, it this time passing above and over the edge of the fabric and into the loop formed, as already described, the hook of the looper-arm at the same time leaving the loop. Then, on the backward stroke of the needle, the cam of the wheel E leaves the box and allows it and its connecting parts to fall forward, (that movement being assisted by the spring v3,) whereby the needle is lowered to its first plane and left free to operate as first described. tively repeated, so that on the first forward thrust of the needle it will pass through the fabric and have the thread taken off it and formed into a loop, and in the second thrust it will pass over the edge of the fabric and into the loop, the looper in the second thrust of the needle, as well as in the first, taking the thread from the needle and forming it into a loop. The operation of the looper-arm is the same in both the first and second thrusts of the needle; but on the second thrust it is on a higher plane than on the first.

An overhanging arm, P, extends horizontally from the upright J, and has a longitudinal slot, 70, formed in it, and a flange, I, extending upward from its top, to which flange there is bolted, in a vertical position, a plate, 0, from the top of which there extends horizontally a rod, m, on which is placed the spool of cotton, which is held against said plate by the coiled spring a.

The square shoulder of one end of a shaft, R, is passed through the slot formed in the arm P, and is held therein by means of a nut and washer screwed onto the end thereof. A shoulder, 0, on the shaft limits its longitudinal movement in the slot, and on that portion of the shaft that extends outward from the arm there is slipped the sleeve S of the needle-arm T, which is held thereon by means of a cap, 19, through which is passed a setscrew to hold the cap in place. This needle-arm is made in two sections, q r, the one secured to the other by a screw, 8.

The lower section has a lug, t, on its rear, to the inside of which lug there is pivoted a lug, a, which fits into the way or channel of the eccentric d, and moves backward and forward therein as the eccentric turns, and it imparts the same motion to the needle-arm.

The lower end of the lower section has a hole formed therein for the reception of the needle-shank, which is held in position by a set-screw, o. The throw of the needle-bar may be regulated by shifting the shaft R in the slot of the arm P.

A horizontal shaft, U, is passed through and secured by a nut to a plate, V, extending from the lower part of the upright J, and on this shaft there slides a sleeve, W, which is formed as part of the looper-arm Y, being at right angles thereto.

The two operations are consecu- The looper is formed with a head, w, and into an opening made therein one end of the looper a is inserted and there held by means of a set-screw, c.

'The lower rear portion of the looper-arm is formed with a vertical extension, (1 which has two horizontal projections or flanges, e g, the first of which is to bear against the inside face of cam g and the other against the periphery thereof, and a spring, h, coiled around the looper-arm sleeve and bearing against the plate Van'd the looper-arm, presses the looperarm outward, so that the projection or flange 0 will be kept in contact with the inside face of the cam g.

In connection with the mechanism described there is used a cylinder supported in an upright position and provided around its circumference with a series of needles on which is impaled the knitted goods to be sewed, the needles being so located that the fabric will be supported in position to permit the sewingneedle to pass through the two thicknesses of fabric near the edges to be sewed together. This cylinder is revolved by means of a dog, one end of which is screwed into the socket of the collar H, while the other end engages with serrations formed on the top of the cylinder, the dog being drawn backward and pushed forward by the eccentric G, by reason of which the cylinder is revolved.

The construction, arrangement, and operation of a cylinder of this kind being well known in the art to which my invention relates, and it forming no part of my invention, a more specific description thereof than that given is unnecessary. This cylinder is not shown in the drawings 3 but a section thereof, with its needles and the fabric impaled thereon, is shown and indicated by the letter A.

In operation, as the needle-point on its first forward thrust enters the fabric the recess 6 comes opposite to the flange c, and as the cam is continued to be revolved the spring h presses the looper-arm Y outward, thereby causing the flange to enter the recess, and by reason thereof to throw the looper outward from the needle. At the same time the looper islowered beneath the needle-point, the periphery of the cam being slightly flattened along the recess t, so as to admit thereof. The swell it next comes against the flange e and forces the looper-arm in next to the machine, which movement draws the looper back, this time under the needle, and until it is freed therefrom. As soon as the swell passes the flange c the spring around the looper-arm sleeve W presses the looper-arm aside into the decline j of the cam g, along which the cams periphery is still further flattened, by reason of which two constructions,and the fact that the flange g is held in constant contact with the periphery of the cam by the spring d, the looper is still further raised and thrown outward over the needle, and the line described by the cams periphery from the terminus of the incline to the recess 13 is such that by its pressure against the flange g the looper would be held substantially in one position until the flange 0 again enters the recess *5 but just at this time, which is as the needle on its backward stroke leaves the fabric, the cam of the wheel E comes in contact with the movable box I and tilts it backward, whereby the needle-arm, as well as the looper-arm, is elevated to a higher plane, so that on the next forward thrust of the needle it will pass over the edge of the. fabric and into the-loop formed, as already described, the looper-arm being'slightly lowered so as to permit thereof, and then operated by the cam cl so as towork, as already described, for the first forward thrust of the needle; and as soon as the looper has passed over the needle and the latter begins its backward stroke the cam of wheel E gradually passes from contact with the movable box I, and the latter assumes its first position, it being assisted therein by the spring 1, thereby lowering the overhanging arm P, and with it the needle-bar, whereby the needle is lowered to its original plane and is in position to again pass through the fabric, as just described.

Having described my invention, what I claim is- 1. In a sewing-machine, the following combination, to wit: a needle and a looper-bar,

and eccentric for reciprocating the needle-bar, 0

a cam for imparting a lateral and a vertical play to the looper-bar, a shaft for operating said eccentric and cam, means for moving said shaft and needle and looper-bars back and forth in the arc of a circle, as described, and 3 5 means for imparting motion to the several parts, substantially as set forth.

2. The combination of oscillating box I, shaft .L, journaled therein so as to oscillate therewith, suitable gearing for rotating said 40 shaft, an eccentric for oscillating said box and shaft, and means for imparting motion to the several parts, as set forth.

3. The combination of shaftD, provided with a cam-wheel, E, gear-wheel F, and eccentric G, 5 I

shaft L, provided with gear-pinion M, cam and eccentric O, needle and looper bars '1. Y, movable box I, supporting shaft L and connected with said needle and looper bars, and means for imparting motion to the several parts, sub- 50 stantially as set forth.

In testimony that I claim the foregoing as I 

